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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

City of El Mirage

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND50ND
2014ND60ND
2015ND50ND
2016ND110ND
2017ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 70 ppb

The EWG Health Guideline of 70 ppb for monochlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-212021589-05ND
2012-02-212021589-04ND
2012-02-212021589-03ND
2012-02-212021589-02ND
2012-02-212021589-01ND
2013-03-063030457-07ND
2013-03-063030457-05ND
2013-03-063030457-01ND
2013-03-143031079-01ND
2013-03-143031079-02ND
2014-02-114020905-09VND
2014-02-114020905-08VND
2014-02-114020905-07VND
2014-02-114020905-06VND
2014-02-114020905-05VND
2014-02-114020905-01VND
2015-01-265012026-01VND
2015-01-265012031-01VND
2015-01-265012030-01VND
2015-01-265012029-01VND
2015-01-265012025-01VND
2016-03-076030608-01VND
2016-05-236051917-01ND
2016-09-136091229-01ND
2016-09-146091229-03ND
2016-09-166091435-03ND
2016-09-166091435-02ND
2016-09-166091435-01ND
2016-09-216091854-01VND
2016-09-216091854-02VND
2016-09-276092333-01VND
2016-12-296122336-01ND
2017-03-097030873-01VND
2017-03-097030871-01VND
2017-03-097030869-01VND
2017-03-137031073-01VND
2017-03-167031500-01VND
2017-03-167031498-01VND
2017-03-167031494-01VND
2017-06-307062823-01VOCND